je.st
news
Tag: warming
Sun-dimming volcanoes partly explain global warming hiatus - study
2014-02-23 11:33:00| Climate Ark Climate Change & Global Warming Newsfeed
Reuters: Small volcanic eruptions help explain a hiatus in global warming this century by dimming sunlight and offsetting a rise in emissions of heat-trapping gases to record highs, a study showed on Sunday. Eruptions of at least 17 volcanoes since 2000, including Nabro in Eritrea, Kasatochi in Alaska and Merapi in Indonesia, ejected sulphur whose sun-blocking effect had been largely ignored until now by climate scientists, it said. The pace of rising world surface temperatures has slowed since an exceptionally...
Tags: study
global
explain
warming
What gradual climate warming could mean for Michigan tourism
2014-02-22 19:48:00| Climate Ark Climate Change & Global Warming Newsfeed
Detroit Free Press: Using models based on 100 years of historical weather data, researchers at the University of Maryland in 2008 created climate projections to help gauge the economic impact of a changing environment on states throughout the country. Models predict a 5- to 10-degree increase in average temperatures and a 20 to 40 percent boost in precipitation. Despite the extra rainfall, Michigan would be drier because hotter temperatures would mean more evaporation. The Great Lakes would experience an increase...
Tags: michigan
warming
tourism
climate
Ending Geoengineering Prematurely Worsen Global Warming
2014-02-19 19:17:00| Climate Ark Climate Change & Global Warming Newsfeed
RedOrbit: Starting and then stopping geoengineering techniques could aggravate global warming, scientists warn. A proposed mitigation technique which involves spewing sulfur particles into the atmosphere could help combat climate change but if stopped after being implemented, it could worsen the problem, according to a new study from University of Washington researchers. Spewing sulfur particles into the air could cool the planet by reflecting sunlight back into space a technique called solar radiation...
Tags: global
ending
warming
global warming
Loss of Arctic Sea Ice Has Greater Warming Impact Than Expected
2014-02-19 18:31:00| Climate Ark Climate Change & Global Warming Newsfeed
Yale Env 360: The steady disappearance of Arctic sea ice, which is causing the exposed and darker surface of the Arctic Ocean to absorb more sunlight, is having a more profound impact on global warming than previously estimated, according to a new study. The decline of albedo, or reflectivity, from the Arctic Ocean equals roughly 25 percent of the warming caused by rising carbon dioxide levels, according to scientists at the University of California, San Diego. The impact of this "albedo feedback," in which the...
Arctic thaw significantly worsens global warming risk
2014-02-18 19:55:00| Climate Ark Climate Change & Global Warming Newsfeed
New Scientist: Melting ice is cooking the planet. Shrinking Arctic sea ice means the ocean is absorbing more energy from the sun, and it's now clear the effect is twice as big as thought - adding significantly to heating from greenhouse gases. Arctic temperatures have risen 2 °C since the 1970s, leading to a 40 per cent dip in the minimum summer ice coverage in the Arctic Ocean. Open water soaks up more sunlight than ice, so as the ice retreats the ocean absorbs more energy, warming it and causing even more...
Tags: global
risk
significantly
warming
Sites : [209] [210] [211] [212] [213] [214] [215] [216] [217] [218] [219] [220] [221] [222] [223] [224] [225] [226] [227] [228] next »